Finding the Fourth Proportional to 194,311.53, 291,342.09 and 81,961.70
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Solution
The fourth proportional to 194,311.53, 291,342.09 and 81,961.70 is: 122,889.73
Step by Step Solution
- Step 1: Write the proportion equation
194,311.53 : 291,342.09 = 81,961.70 : x - Step 2: Convert to fraction form
194,311.53/291,342.09 = 81,961.70/x - Step 3: Cross multiply
194,311.53x = 291,342.09 × 81,961.70 - Step 4: Simplify right side
194,311.53x = 23,878,891,521.24 - Step 5: Solve for x
x = 23,878,891,521.24/194,311.53 - Step 6: Final answer
x = 122,889.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.